<h5 class="sidebartitle">导航</h5>
<ul class="nav nav-pills nav-stacked nav-bracket">
 <li class="nav-parent nav-active active"><a href="javascript:void(0)" (click)="toggle()"><i class="glyphicon glyphicon-th-list"></i> <span>系统管理</span><i class="glyphicon tree-icon" [ngClass] ="setClasses()"></i></a>
    <ul class="children" [class.show] ="flag">
      <li><a routerLink="system-setting/role-manage" routerLinkActive="active" (click)="set('角色管理')"><i class="fa fa-caret-right"></i> 角色管理</a></li>
      <li><a routerLink="system-setting/account-manage" routerLinkActive="active" (click)="set('账号管理')"><i class="fa fa-caret-right"></i> 账号管理</a></li>
    </ul>
  </li>
</ul>
